Carving-machine.



No. 824,146. PATENTED JUNE 26, 1906.

F.- H. RICHARDS.

GARVING MACHINE.

APPLICATION FILE?) JULY 17, 1902.

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F. H.1 RICHARDS. GARVING MACHINE.

APPLICATION FILED JULY 17. 1902.

PATENTED JUNE 26, 1906.

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PATENTED JUNE 26, 19 06 No. 824,146. r. H. RICHARDS.

, GARVING MACHINE. APP LIOATION FILED JULY 17. 1902.

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No. 824,146. PATENTED JUNE 26, 1906.

F. H. RICHARDS. GARVING MACHINE.

APPLICATION FILED JULY 17. 1902.

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" UNITED STATES PATENT OFFICE.

FRANCIS H. RICHARDS, or HARTFORECONNEGTIOUT.

OARVING- MACHINE,

Specification of Letters Patent.

Patented June 26, 1906.

Application filed July 17,1902. Serial No. 145,920.

To all whom it may concern:

Be it known that I, FRANCIS H. RIoHARDs,

a citizen of the United States, residing at -new and useful Improvementsin Carving-g Machines, of which the following is a specifi-j My presentinvention pertains to ma-; chines for carving repeat ornaments or a re-}peating series of ornaments on wood, mold-i ings, or the like, andrelates to that class of? carving-machines wherein two or more tools? orchisels coact to incise stock to produce thej contour or configurationof said ornamentsll In machines of this character speed andl durabilityare especially sought for; and some of the objects of the presentinvention are to provide a carving-machine of improved design andpractical construction conceived} with the express purpose ofimprovement; and advancement to these ends.

This invention consists in those novel fea-; tures of construction andorganization em-i bodied in the machine illustrated, described,l

specification, and claims. A I have illustrated one embodiment of my,

invention in a carving-machine of the inter-j mittent-feed type; but thesame may in principle and in many 'detailed features be? applied toother types of carving-machines orj machines designed for other work,but having;

more or less analogous operations. Like reference characters denote likeparts} 1 throughout the several views of thedrawings. Figure l-is asideviewof the machine,f

showing the base or frame sectioned'on'linei 1 frame cut away, and Fig.afldetail in spective of the superstructure. I

:20 ref Fig. 3; Fig. 2, a plan view, Fig.3, a vertical cross-section online y y of'Fig. 2;} Fig.4, a front view showing front wall of. per-;

Referring to the drawings, the-machine is mounted and assembled on abox-like frame A one-piece crank-shaft 2 is mounted longitudinally ofthe frame A in a bearing 3 in thefront wall and a bushing-bearing 1 inthe rear wall, said bushing-bearing 4 being designed to close anaperture 5 in said rear wallmade large enough-to permit of the in-'sertion of the crank-shaft- 2. The crankshaft 2 projects withoutthebearing 4 and is J provided with a fast driving-pulley 6, thehub .ofwhich pulley: and a fast collar 7,-abutting 2 opposite sides of thebearing 4, restrict the nected with the crank of crank-shaft 2 by aconnecting -'rod 11. A stock guide 12 .is mounted on supports 13 13,upstanding from the top of the frame A and lies parallel to anddirectly'above the shaft 2. The stock-guide 12 forms a right angle incross-section and is set with the flanges of said angle equally inclinedfrom the perpendicular. The supports 13, together with the stock-guide12, are removable from the frame A. A plate 14 is secured to the top ofthe frame A bybolts 15 and carries oppositelyinclined slideways 16 and17, set one before the other closeto the stock-guide 12 and eachinclined at approximately the same angle-as that of the flange of saidstock-guide next thereto.

- a slide 19 is mounted in the slideway 17.

Both of the slides 18 and 19 are provided with tool:beds 20 on theirupper surfaces, and'toolclamps 21 serve'as meansfor securing the tools22t0 said tool-beds 20. Studs 23 and 24'project laterallyfrom eitherside of the cross-head 10, directly 'beneath the center lines of theslides 18 and 19, respectively. A connecting-rod 25 is jointed to a lug26, de- "pending from the under side of the slide 18 and connects saidslide with the stud 23 on the'crOss-head 10. A connecting-rod 27 is Ijointed to a lug 28, depending from the under with the stud 24 on thecross-head 10. The connecting rods 25 and 27 pass down throughapertures29 in the plate 14 and aperterior of the frame A. The tool-beds 20 areraised above the lower portions 31 of the 7 slides 18 and 19,'so as tobring the tools 22 to the correct height toincise a piece ofstock 32,shown lying in thestock-guide 12. The stock-guide 12 adjacent each ofthe tools is provided'with-blocks 33', which are secured to thestock-guide by screws 52and have interiorsurfaces corresponding to theconfiguration of the stock, thus forming an inclosed stock-guide exceptat the points where; the

mounted to slide in the guides 8 8 and is con- I It will be seen thatthe stock-guide 12 lies side of the slide 19 and connects said slide 5tures in the top of the frame A'to the infast on a shaft 36, mounted ina bearing 37,

I projecting from the stock-guide, and a bearing 38, supported in thetop of the frame A.

- half.

The shaft 36 passes through the bearing 38 to the interior of the frameA, where it is geared, through bevel-gears 39 and 40, to a horizontaltransverse shaft 41, mounted in bearings 53 and 54 in the walls of frameA.

An oscillatable lever 42 is loosely pivoted on the shaft 41 directlyabove the driving-shaft 2 and carries a pawl 43, adapted to engage aratchet wheel 44, fast on shaft 41. The pawl 43 is maintained in contactwith the ratchet-wheel 44 by a spring 45. A connecting-rod 46 is jointedto the lever 42 and has a bifurcated lower end, which embraces thedriving-shaft 2. Aroller 47 is loosely mounted on a stud 48, projectingfrom the connecting-rod 46 and is adapted to ride upon a heart-shapedcam 49, fast on the driving-,

shaft 2. A spring 50, connected from the lever 42 to the wall of theframe A, maintains the roller 47 in constant contact with the cam 49. Ablock 51, similar to blocks 33, is secured to the stock-guide directlyabove the feed-roll 34 and serves to keepthe stock in position to beengaged by said feed-roll.

The operation of the machine is as follows: Stock is placed in thestock-guide 12 and under the block 51 when it is engaged by thefeed-roll 34 and fed forward intermittently. As the driving-shaft 2 isrotated the cam 49, contacting the roller 47, carries the connecting-rod 46 upward, and the pawl 43, engag-- ing a tooth of theratchet-wheel 44, rotates the shaft 41 during this movement. Thisrotation of the shaft 41 is communicated to the shaft 36 and feed-roll34 through the gears 39 and 40, accomplishing the feed of the stockduring a half-revolution of the'driving-shaft '2. During the otherhalf-revolution of the driving-shaft 2 the connectin rod 46 is movingdownwardly and the paw 43 is returning idly over the tooth of theratchet-wheel 44, allowing the feed-roll 34 to remain at rest,accomplishing a eriod of non-movement of the stock. As t e driving-shaft2 rotates, the slides 18 and 19 reciprocate simultaneously, the tools 22reaching, entering, withdrawing, and leaving the stock lying in thestock-guide 12 during one-half revolution of said driving-shaft 2 or alittle less than one- During the remaining half-revolution of thedriving-shaft the tools 22 complete their outward movement and moveforward to the stock again entirely without the profile of the stock.The crank of the driving shaft 2 and the heart-cam 49 are set with suchrelation to one another that the feeding movement shall take placeduring that halfrevolution when the tools are entirely without thestock, and the movement of the tools within the profile of the stock inmaking the incisions and leaving the stock shall take place during thathalf-revolution when the feed-roll 34 is at rest. The distance fed ateach feed of the roll and the distance between the tools is such that anincision made in the stock by the first tool will exactly register withsome succeeding position of the second tool during the period of rest.It will therefore be seen that the tools operate simultaneously, butmake the contradistinctive incisions of separate repeats at each stroke,that )ortion of the stock operated upon by the irst tool assuming atsome succeeding stroke the position assumed by that portion of the stockwhich was operated upon by the second tool when said first-mentionedportion was operated upon by said first tool. The tools act intransverse intersecting lines, which, in the. form herein illustrated,are in parallel planes, and the working strokes of the tools are sotimed for cooperation with a relatively intermittently advancing feedmotion that they will repeatedly cooperate in the production of acompleted design at the intervals of the measure of the repeat, themeasure of the advance of the stock relatively to the tools being thedistance apart of the centers of the repeat designs, each tool at eachchange of position of the stock performing its portion of the cutting ofa design. The two carriages 18 and 19, it will be noticed, are of suchlength that they extend both above and below the stockguide throughoutthe stroke, giving a very long purchase on the gibs. It will also benoted that the connecting-rods connecting the cross-head with thecarriages are jointed to the carriages directly beneath the tool, sothat the purchase is applied as close to the point where the resistanceoccurs as possible and prevents, in a great measure, binding of thecarriages in the guides. the crank is applied to the cross-headvertically and any pounding action will be of a vertical nature and willbe taken up by the foundation and will not be the cause of lat eralvibration. The power is applied to both carriages at the same time onopposite sides of the central line and the thrusts will counteract oneanother and prevent lateral vibration. The tools and. carriages beingset side by side and not 0 aerating upon the same point on the stock,allow the tools to be actuated simultaneously without bringing theircutting edges into contact.

It is obvious that various changes may be made in the details ofconstruction and gen- .eral arrangement of the parts to adapt themachine to particular kinds of work'wi-thout departing, from the spiritof the invention.

claim 1. In a carving-machine, a plurality of tool-carriagesreciprocatable in latera1lydisplaced non-coincident parallel linestransversely of one another, a cross-head reciprocatable on the linebisecting the angle made by and equidistant from said tool=carriages,

, connecting-rods connecting said cross-head with said tool-carriages, acrankmounted in the line of reciprocation of said cross-head,

and adapted to carry the tools on said. carand means for reciprocatingsaid carriages to carry said tools to a common line defining the limitsof travel of the tools.

3. In a carving-machine, a plurality of carriages mounted to reciprocatein laterallydisplaced non-coincident planes transversely of one anotherpast the crossing-points of their paths, a knife on each carriage, and.means for synchronously reciprocating said carriages to carry saidknives to a common line defining the limits of travel thereof.

4. In a carving-machine, a plurality of tool-carriages mounted toreciprocate in laterally-displaced non-coincident lines transversely ofone another past the crossingpoints of their paths to carry their toolsto a common line defining their inner limit of travel, and a stock-guidedisposedin the angle formed by said carriages and parallel to the facesof each of said carriages.

5. In a carving-machine, a plurality of tool-carriages mounted toreciprocate in laterally-displaced non-coincident parallel linestransversely of one another, a cross-head reciprocatable on the linebisecting the angle formed by said carriages and equidistant from saidcarriages and below the intersection of the paths ofsaid carriages,connecting-rods connecting said cross-head with the under side of eachof said carriages, a crank mounted in the line of reciprocation of saidcross-head and a connecting-rod connecting said crank and saidcross-head.

6. In a carving-machine, a plurality of tool-carriages mounted toreciprocate in laterally displaced non coincident parallel planestransversely of one another past the crossing-points of their paths, astock-guide disposed in the angle formed by said carriages and parallelto the respective faces of which said carriages are adapted toreciprocate, and tools mounted upon the faces of said carriages to meeta common line lying parallel to and within the angle of said stockguideat the lower extremes of the movements of said carriages.

7. In acarvingmachine, a plurality of tool-carriages mounted toreciprocatein laterally displaced non coincident parallel, 7

planes transversely'ofone another, a stockguide disposed in the angleformed by said carriages and parallel to the faces of each of saidcarriages, a cross-head reciprocatable below and equidistantly from saidcarriages on a line bisecting the'angle made by said carriages,connecting-rods connecting said cross-head with said carriages, adrivingshaft mounted parallel to said stock-guide and intersecting theline bisecting the angle of said carriages, a crank in said drivingshaftin line with said cross-head and a connecting-rod connecting said crankand crosshead.

8. In a carving-machine, the combination of a plurality oftool-carriages mounted to reciprocate transversely of one another inpaths equally inclined from the vertical, and in adjacent planes, aknife mounted on each carriage, stock-feeding means operabletransversely of the lines of travel of said carriages,

a cross-head reciprocatable vertically in line with the point ofcrossing of the paths of travel of said carriages, connecting-rods connecting said cross-head with said carriages, a driving-shaft mounted inthe same plane with and perpendicular to the path of said cross-head, acrank in said driving-shaft in line with said cross-head for carryingthe tools on said carriages when connected, to a common line definingthe limits of travel of the knives, and a connecting-rod connecting saidcrank and said cross-head.-

9. In a carving-machine, the combination of a plurality oftool-carriages mounted to reciprocate in laterally-displacednon-coincident parallel lines transversely of one another in pathsequally inclined from the vertical, a cross-head reciprocatablevertically in line with the point of crossing of the paths of saidcarriages and midway between said can riages, I connecting-rodsconnecting said cross-head with said carriages, a drivingshaft mountedin the same plane with and perpendicular to the path of said cross-head,a crank in said driving-shaft in line with said cross-head, and aconnecting-rod connecting said crank and said cross-head.

10. In a carving-machine, the combination upon the faces of saidcarriages to meet a common line lying Within the angle of saidstock-guide at the lower extremes of the movements of said carriages, across-head reciprocatable below said carriages, on a line bisecting theangle made by said carriages and midway between said carriages, andconnecting-rods connecting said cross-head with the under sides of saidcarriages at points beneath said tools.

12. In a carving-machine, the combination of a plurality of toolsmounted to reciprocate in laterally-displaced non-coincident parallellines transversely of one another, a stockguide disposed. in the angleformed by said carriages, a cross-head reciprocatable on a linebisecting the an le formed by said carriages, connecting-rods connectingsaid crosshead and said carriages, a driving-shaft, a crank on saidshaft, a connecting-rod c011- necting said. crank and said cross-headand an intermittent stock-feed operatively connected with saiddriving-shaft to feed stock a distance equal to the distance between thecenters of said tools measured along said stock-guide or a factor ofsaid distance while said tools are traversing that half of their pathsfarthest from the said stock-guide.

FRANCIS H. RICHARDS. Witnesses:

MARoUs C. HorKINs, JoI-rN O. SEIFERT.

